1. Aviala, A., and J. Penuelas, 1999: Increasing frequency of Saharan rains over north-eastern Spain and its ecological consequences. The Science of Total Environment, 228(2–3), 153–156.
2. Azri, C., A. Maalej, A. Tlili, and K. Medhioub, 2002: Characterization of the pollution level in Sfax City (Tunisia): Influence of sources and meteorological factors. Techniques, Sciences, Méthodes TSM, 97, 78–92.
3. Bach, W., 1976: Global air pollution and climate change. Rev. Geophys. Space Phys., 14(3), 429–474.
4. Belghith, I., 1999: Study of the atmospheric aerosol in the region of Sfax: Influence of local and synoptic meteorological conditions. Ph. D. dissertation, University of Tunis II, 207pp.
5. Ben Ayed, N., 1993: Tectonic evolution of the alpine range of Tunisia. Annuals of mines and geology, No. 32, Editions of the geologic service of Tunisia, 120pp.